package com.ljpz.common.service;

import com.ljpz.common.httpclient.HttpResult;
import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpDelete;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.client.utils.URIBuilder;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.BeanFactoryAware;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Required;
import org.springframework.stereotype.Service;
import java.io.IOException;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * Created by liujunchen on 2016/12/12.
 */
@Service
public class ApiService implements BeanFactoryAware{
    //这个注解标记为对应可有可无
    @Autowired(required=false )
    private RequestConfig requestConfig;

    //spring初始化是会初始化一个beanFactory
    private  BeanFactory  beanFactory  ;
    /**
     * GET请求地址，响应200 ，返回响应的内容，响应为404  或者500 返回null
     * @param url
     * @return
     * @throws ClientProtocolException
     * @throws IOException
     */
    public  String  doGet(String url ) throws ClientProtocolException,IOException ,URISyntaxException{
        // 创建http GET请求
        HttpGet httpGet = new HttpGet(url);
        httpGet.setConfig(requestConfig);
        CloseableHttpResponse response = null;
        try {
            // 执行请求
           response =getHttpclient().execute(httpGet);
            //返回状态码
            if(response.getStatusLine().getStatusCode()==200){
                return EntityUtils.toString(response.getEntity(),"UTF-8") ;
            }
        } finally {
            if (response != null) {
                response.close();
            }
        }
        return null;
    }
    public  String doGet(String url , Map<String,String> params) throws  ClientProtocolException, IOException,URISyntaxException{
        //定义请求的参数
        URIBuilder   builder = new URIBuilder(url) ;
        for (Map.Entry<String,String>entry:params.entrySet()){
            builder.setParameter(entry.getKey(),entry.getValue());
        }
        return   this.doGet(builder.build().toString());
    }



    public  Integer doDelete (String url ) throws   ClientProtocolException,IOException ,URISyntaxException{
        //创建httpDelete 请求
        HttpDelete httpDelete  = new HttpDelete(url)  ;
        httpDelete.setConfig(requestConfig);
        CloseableHttpResponse response = null ;
        try {
            //执行请求
            response=getHttpclient().execute(httpDelete)  ;
            //返回状态码
            return  response.getStatusLine().getStatusCode()  ;
        }finally {
            if (response!=null){
                response.close();
            }
        }
    }
    public Integer  doDelete(String url ,Map<String,String>params) throws  ClientProtocolException, IOException,URISyntaxException{
        //定义请求的参数
        URIBuilder builder = new URIBuilder(url)  ;
        for (Map.Entry<String,String>entry:params.entrySet()){
            builder.setParameter(entry.getKey(),entry.getValue());
        }
        return  this.doDelete(builder.build().toString());
    }



    public HttpResult doPost(String url , Map<String , String >params ) throws  ClientProtocolException,IOException,URISyntaxException{
        // 创建http POST请求
        HttpPost httpPost = new HttpPost(url);
        httpPost.setConfig(requestConfig);
        if (null!=params){

            // 设置2个post参数，一个是scope、一个是q
            List<NameValuePair> parameters = new ArrayList<NameValuePair>(0);
            for (Map.Entry<String,String>entry:params.entrySet()){
                parameters.add(new BasicNameValuePair(entry.getKey(),entry.getValue()));
            }
            //构造一个form表单式的实体
            UrlEncodedFormEntity formEntity= new UrlEncodedFormEntity(parameters)  ;
            //将请求实体设置到httpPost对象中
            httpPost.setEntity(formEntity);
        }


        CloseableHttpResponse response = null;
        try {
            // 执行请求
            response = getHttpclient().execute(httpPost);
            return  new HttpResult(response.getStatusLine().getStatusCode(),EntityUtils.toString(response.getEntity(),"UTF-8"));
        } finally {
            if (response != null) {
                response.close();
            }
        }
    }
    public  HttpResult doPost(String url ) throws   ClientProtocolException,IOException,URISyntaxException{
        return  this.doPost(url, null );
    }

    private  CloseableHttpClient getHttpclient(){
        return this.beanFactory.getBean(CloseableHttpClient.class) ;
    }

    @Override
    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
        //该方法实在spring容器初始化时会调用该方法，传入beanFactory函数
        this.beanFactory=beanFactory;
    }
    /**
     * 带有json参数的POST请求
     *
     *
     * @param url
     * @param
     * @return
     * @throws ClientProtocolException
     * @throws IOException
     * @throws URISyntaxException
     */
    public HttpResult doPostJson(String url , String json) throws  ClientProtocolException,IOException,ClientProtocolException{
        HttpPost httpPost = new HttpPost(url);
        httpPost.setConfig(requestConfig);
        if (null!=json){
            StringEntity  stringEntity = new StringEntity(json, ContentType.APPLICATION_JSON);
            //将请求实体设置到httpPost对象中
            httpPost.setEntity(stringEntity);
        }


        CloseableHttpResponse response = null;
        try {
            // 执行请求
            response = getHttpclient().execute(httpPost);
            return  new HttpResult(response.getStatusLine().getStatusCode(),EntityUtils.toString(response.getEntity(),"UTF-8"));
        } finally {
            if (response != null) {
                response.close();
            }
        }
    }



}
